Update "ragel" branch notes
Update "ragel" branch notes

Explain purpose of the "ragel" branch for anyone who might chance upon
it. Further development will continue on the "master" branch after
merging.

Signed-off-by: Wincent Colaiuta <c76ac2e9cd86441713c7dfae92c451f3e6d17fdc@wincent.com>

wincent/wikitext,wincent/wikitext,geni/wikitext,barnaclebarnes/wikitext,geni/wikitext,geni/wikitext,barnaclebarnes/wikitext,barnaclebarnes/wikitext